Internet Encyclopedia of Philosophy
Academy, Active Powers, Aenesidemus, Anaxagoras, Anaxarchus, Anaximander, Anaximenes, Animals and Ethics, Anselm, Antisthenes
Stanford Encyclopedia of Philosophy
18th Century German Philosophy Prior to Kant, Abstract Objects, Action, Actualism, Adorno, Theodor, Aesthetic Judgment, Alan M. Turing, Albert of Saxony, Alcmaeon, Alfred North Whitehead
Dictionary of Sorts
Philosophical terms mostly from ethics and epistemology, edited by Robert Berman.
ISCID Encyclopedia of Science and Philosophy
A free, community developed resource containing information on both science and philosophy.
Larry Hauser's Mostly Modern Philosophical Gl
Glossary of philosophical terms focusing on modern philosophy.
Meta-Encyclopedia of Philosophy
A list of philophical terms and names linked to the major encyclopedias and dictionaries of philosophy on the internet.
PhiloSophos
Includes philosophy papers, university distance learning programs and college correspondence courses, and a philosophy dictionary.
Philosophy Dictionaries and Encyclopedias
Collection of links to philosophy reference sources.
Routledge Encyclopedia of Philosophy
Online edition. Free access to sample contents, full access by subscription.
Sophia Project
On-line resource for philosophy students sponsored by the Molloy College Department of Philosophy.
The Ism Book
A dictionary of philosophies from Peter Saint-André, editor of the Monadnock Review.
Think: Philosophy
Philosophy resource for beginners. Contains philosophers, schools of thought, and topics.
Wikipedia: Philosophy
The entrance page to all articles in the philosophy section of the free encyclopedia.